Tanything doesn't work on FF 50.0a2

[runejuhl]

When trying to use Tanything, the following stack trace appear in the browser console:

win is null eval.js line 1 > eval:73
getInfoForTab chrome://keysnail/content/eval.js line 1 > eval:73:22
callSelector/currentCollection<chrome://keysnail/content/eval.js line 1 > eval:79:25
mapself-hostedcallSelectorchrome://keysnail/content/eval.js line 1 > eval:78:34
self.showAlltabchrome://keysnail/content/eval.js line 1 > eval:262:18
self.execchrome://keysnail/content/modules/ext.js:74:17
<anonymous>chrome://keysnail/content/eval.js line 1 > eval:16:3
key.executeFunctionchrome://keysnail/content/modules/key.js:1279:17
key.handleEventchrome://keysnail/content/modules/key.js:617:17

Is there any easy way to debug plugins? I tried dropping a debugger; statement in there, but it didn't work, and console.log likewise looks like it's disabled.